<?php 
	function settings_upload_avatar($files,$uploadDir,$flag=1)
	{
                //flag? 1 => images
			    //		2 => video
				//		3 => file
                $size=$files['size'];
                if($size>204857600)
                {
                    echo "file_biger";
                    unlink($files['tmp_name']);
                    exit;
                }
             	$filename = stripslashes($files['name']);
                $extension = strtolower(get_file_extension($filename));
			  	switch ($flag) {
				case '1':
					$ischeck = isImage($extension);
					break;
				case '2':
					$ischeck = isVideo($extension);	
					break;
				case '3':
					$ischeck = isFile($extension);
					break;
                case '4':
                    $ischeck = isFlash($extension);
					break;
				
				}
	
				if($ischeck==1){
					$name_temp =str_replace( $extension ,'',$filename); 
					$name =removeSign($name_temp).'_'.date("dmy").".".$extension;
					//$file_ext = $name.'.'.$extension;
					$dirfilename = $uploadDir.$name;
					if (move_uploaded_file($files['tmp_name'], $dirfilename))
					{
						return $name ;
						echo json_encode($data) ;
					}else{
						$error ="Gặp sự cố khi tải lên"; 
						return false;
					}
				}else{
					return '-1';
				}
           
	}
	function removeSign($str) {  
	$str = strip_tags($str);
	$str = mb_strtolower($str,'utf-8');
	$str = preg_replace("/(à|á|ạ|ả|ã|â|ầ|ấ|ậ|ẩ|ẫ|ă|ằ|ắ|ặ|ẳ|ẵ)/", 'a', $str);  //|á|à|ả|ã|ạ|ấ|ầ|ẩ|ẫ|ậ|ắ|ằ|ẳ|ẵ|ặ
	$str = preg_replace("/(è|é|ẹ|ẻ|ẽ|ê|ề|ế|ệ|ể|ễ)/", 'e', $str);  
	$str = preg_replace("/(ì|í|ị|ỉ|ĩ)/", 'i', $str);  
	$str = preg_replace("/(ò|ó|ọ|ỏ|õ|ô|ồ|ố|ộ|ổ|ỗ|ơ|ờ|ớ|ợ|ở|ỡ)/", 'o', $str);  
	$str = preg_replace("/(ù|ú|ụ|ủ|ũ|ư|ừ|ứ|ự|ử|ữ)/", 'u', $str);  
	$str = preg_replace("/(ỳ|ý|ỵ|ỷ|ỹ)/", 'y', $str);  
	$str = preg_replace("/(đ)/", 'd', $str);
	$str = preg_replace("/(:|;)/","",$str);
	$str = preg_replace("/(́|̀|̉|̃|̣)/","",$str);
	$str = str_replace("_","",$str);
	$str = str_replace("?","",$str);
	$str = str_replace('"',"",$str); 
	$str = str_replace(")","",$str); 
	$str = str_replace("/","",$str);
	$str = str_replace("%","",$str);
	$str = str_replace("&","",$str);
	$str = str_replace("–","",$str);
	$str = str_replace("_","",$str);
	$str = str_replace(".","",$str);
	$str = str_replace(",","",$str);
	$str = str_replace("-","",$str);
	$str = str_replace("(","",$str);
	$str = str_replace("!","",$str); 
	$str = str_replace(" ","-",$str); 
	$str = str_replace("----","-",$str);
	$str = str_replace("---","-",$str);
	$str = str_replace("--","-",$str);
	$str = preg_replace(array('/[^a-zA-Z0-9 -]/'), array(''), $str) ;
 	return $str; 
 }
 
	
	function toMBytes($bytes,$decimal=2) {
		$kb = ($bytes * 8) / 1024;
		$mb = ($kb /1024) / 8;
		return round($mb,$decimal);
	}
	
	function toKBytes($bytes,$decimal=2) {
		$kb = ($bytes * 1) / 1024;
		return round($kb,$decimal);
	}

/*-----------------------------------------------------------------------*
* Function: toBytes
* Parameter: Mega bytes
* Constants:  UPLOAD_SIZE_MBYTES | UPLOAD_SIZE_BYTES
* Return: file size 
*-----------------------------------------------------------------------*/

	function toBytes($mb) {
		$bytes = ((($mb * 8) * 1024) * 1024) / 8;
		return $bytes;
	}
	function isImage($str) {

		if(preg_match("/jpg|png|gif|jpeg/",$str)) return 1;
		return 0;
	}
    function isFlash($str) {

		if(preg_match("/swf/",$str)) return 1;
		return 0;
	}
	function isVideo($str) {

		if(preg_match("/wmv|mpg|mp4|mov|avi|flv/",$str)) return 1;
		return 0;
	}
	function isMusic($str) {

		if(preg_match("/wma|wav|mp3|asf/",$str)) return 1;
		return 0;
	}
	function isFile($str) {
		if(preg_match("/doc|zip|rar|docx|xlsx|pptx/",$str)) return 1;
		return 0;
	}
	function get_file_extension($file_name) {
		return substr(strrchr($file_name,'.'),1);
	}
  	
	
?>